Femara & IUI Success?

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We have just finished all of our testing at Shady grove, and all normal... so we are left with unexplained infertility( I do not ovulate). 
Fast foreword we ended up deciding on Femara & IUI (I have done 2 failed rounds of Clomid with my GYN). 
Who has done Femara with an IUI and had success after failed clomid?